Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.Firstly, using LPCScrypt to recognize the SPIFI flash to confirm whether the hardware connection is right.If the S25FL128L is able to be recognized, definitely, it represents that the debug issue about the compatibility between the flash algorithm and the S25FL128L.Please refer to the attachment, and give a shot.Have a great day,TIC

Thanks for your reply.Actually, the chip will be enumerated as DFU class device after attaching the USB port when the chip boot from USB, it's nothing with the external QSPI, as the code is stored in ROM area.I think you should use the following steps to recognize the external QSPI instead of click Boot LPCscrpt directly.

Fig 1

1. Open command window2. Input cd ~\bin to transfer to bin file

Fig 2

3. Input LPCScrypt queryspifi to recognize the flash.Have a great day,TIC